Cutter and cutter-holder



(No Model.)

E. w. 000KB. GUTTER AND CUTTER HOLDER.

Patented Feb. 23, 1892.

UNITED STATES PATENT OFFICE.

ERNEST WILLIAM COOKE, OF WVESTERN SPRINGS, ILLINOIS.

CUTTER AND CUTTER-HOLDER.

SPECIFICATION forming part of Letters Patent No. 469,625, dated February 23, 1892.- Application filed April 6, 1891- Serial No. 387,790. (No model.)

To all whom it may concern:

Be it known that LERNEsT WILLIAM CooKE, a citizen of the United States, and a resident of Western Springs, in the county of Cook and State'of Illinois, have invented a certain new and useful Improvement in Cutters and Cutter-Holders, of which the following is a specification.

My invention relates to cutters and cutterholders; and my object is to provide such a cutter that it may from its general contiguration and shape retain its position in said holder firmly against displacement while in use or while being sharpened and a holder adapted for securely retaining said cutter.

In the accompanying drawings, Figure 1 is a perspective view of my improved cutter. Fig. 2 is a side elevation thereof. Fig. 3 is a sectional view showing the cutter in position in the holder. Fig. 4 is an under side view of the holder. Fig. 5 is a section on line ma: of Fig. 3. Fig. 6 is a sectional view showing the head of the holder without the cuttingtool in place.

The numeral 1 indicates the head or cutting portion of the tool, the sides 2 of which cutting portion '1 are of greater width than the neck of the-tool 3 and project beyond the side of the neck 3, as shown, and the front portion of said cutting-head has a vertical rearward inclination, as at 9. Below the cutting portion the metal is extended downwardly and is then given a rearward inclination, which may be either rounded. or straight. Extending rearwardly from the neck portion is a shank 4, which may either be cylindrical or of other suitable shape. A space 5 is left between the rear portion of the head and the front portion 6 of the neck, said portion 6 of the neck being made to incline so as to be flush with the incline of the front portion of my holder when secured in position. The upper portion of the neck at 7 is flattened, so as to obtain a firm seat in the holder.

This tool-is secured in the holder by the rearWardly-inclined portion 8 of the neck resting against a correspondinglyinclined portion of the holder, and said flattened-portion 7 bears against the upper inside portion of the holder. A screw is passed through the holder, so as to bear upon the shank 4, thereby securing the tool more firmly in its position.

It will be seen from the manner in which the tool projects from the cutter-holder that said tool may be used for a great variety of work and that it may be sharpened while in the holder.

In order to retain the cutter securely in position while at work in a machine and while it is being sharpened, I have devised a holder particularly adapted to said tool, which Iwill now proceed to describe.

As shown, my holder is rectanglar in gen eral outline, with the front end beveled, as at 11, to conform with the outline of the front portion 6 of the neck of the cutter when the latter is secured in the holder. A recess 12 to receive the tool is formed in the forward portion of the holder, said recess extending longitudinally a distance corresponding with the length'of the cutting-tool. The walls of this recess are especially adapted, as already stated, to receive the cutting-tool. The upper wall 13 is downwardly inclined. The lower wall 14' has an upward inclination, either curved or straight, to conform to the under side of the neck of the cutter, and the lower wall has an extension 15 at an obtuse angle thereto downwardly.

The numeral 16 indicates a screw-bearing in the shank of the cutter to aid in retaining it in position.

I preferably out a slit 17 through the holder from the under side, said slit extending the entire length of the tool-recess 12. A screw 18 is passed through one side of the holder and extends into a threaded recess in the other side of the holder. While this slit is not absolutely necessary, and I construct holders without it, it will be seen that by its use a better hold is obtained on the tool and that any irregularities in the tool-shank may be compensated for.

When the tool is placed in position, it will be absolutely secure in said holder, as the resistance of the work will tend to hold it in place by forcing the shank thereof against the wall of the recess.

Having thus fully described my invention, what I claim herein as new, and desire to secure by Letters Patent, is-

1. A cutting-tool having a rearwardly-inclined head provided with lateral extensions, and a curved space between the rear portion thereof and the front portion of the neck, said neck having at its under side an upward inclination terminating in a shank.

2. A cutting-tool having a rearwardly-inclined head, a neck having a flattened upper portion, and an under portion with an upward inclination terminating in a shank, and a curved space between the rear portion of the head and the front portion of the neck.

3. A tool-holder having a recess in one end, said recess having an upwardly and a downwardly inclosed wall to receive the tool, a slit extending through one wall of said recess, and means for causing said divided walls to bind against the tool.

4. A tool-holder having a tool-receiving recess with a downwardly-inclined wall and a separate upwardly-inclined wall for the neck and shank of the tool, and means to bear against said shank to aid in wedgingit in position.

5. A tool-holder having a tool-receiving recess in its end provided with a downwardlyinclined wall, an upwardly-inclined wall, and an obtuse-angled extension of the latter, in

combination with a tool adapted to be seated in said recess, and means for binding the tool therein. a

6. A tool-holder having a tool-receiving recess provided with a downwardly-inclined wall, an upwardly-inclined wall, an obtuseangled extension of the latter,and a slit in said recess, in combination with a tool having a neck and shank corresponding in shape with said recess, and means for locking the tool in position.

7. A tool-holder having an angular recess to receive the neck' and shank of a tool, a slit extending through one wall of said recess, means for drawing the sides of the holder together against a tool, and a screw to bear against the shank of the tool.

S. A tool-holder having an angular recess to receive the neck and shank of a tool, in

combination with a tool having a long shank with a flattened portion on its upper side adapted to fit in said recess, means for drawing the sides of the holder against the tool, and means for pressing against the upper side of the tool tobind it in position.

In testimony whereof I have hereunto signed my name in the presence of two witnesses. ERNEST WILLIAM OOOKE. Witnesses:

A. O. RUTAN, '1. J. THOMPSON. 

